Finding the Fourth Proportional to 1,707,720.45, 2,355,023.85 and 1,118,140.09
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Solution
The fourth proportional to 1,707,720.45, 2,355,023.85 and 1,118,140.09 is: 1,541,965.83
Step by Step Solution
- Step 1: Write the proportion equation
1,707,720.45 : 2,355,023.85 = 1,118,140.09 : x - Step 2: Convert to fraction form
1,707,720.45/2,355,023.85 = 1,118,140.09/x - Step 3: Cross multiply
1,707,720.45x = 2,355,023.85 × 1,118,140.09 - Step 4: Simplify right side
1,707,720.45x = 2,633,246,579,591.15 - Step 5: Solve for x
x = 2,633,246,579,591.15/1,707,720.45 - Step 6: Final answer
x = 1,541,965.83
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.